Ventilator.



H. OBERMANN.

VENTILATOB.

APPLICATION FILED SEPT. 19, 1910.

Patented Apr 4, 1911.

o o o o o o e amoe-ntor HENRY OBERMANN, OF FREISTAT'I, MISSOURI.

VENTILATOR.

Specification of Letters Patent.

Patented Apr. 4, 1911.

Application filed September 19, 1910. Serial No. 582,742.

To all whom it may concern:

Be it known that I, HENRY OBERMANN, a citizen of the United States,residing at Freistatt, in the county of Lawrence and State of Missouri,have invented certain new and useful Improvements in Ventilators; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to improvements in ventilators for buildings.

The invention consists in the construction and arrangement of parts, aswill be hereinafter described and particularly pointed out in the claim.

In the accompanying drawings: Figure 1 is a vertical section through awall showing the application of the ventilator; Fig. 2 is an enlargedvertical sectional view of the ventilator; Fig. 3 is an outer end viewthereof; Fig. 4 is an inner end View of the same.

Referring more particularly to the drawings 1 denotes the ventilatorwhich is formed in two adjustably connected funnel shaped sections 2 and3. The sections 2 and 3 have on their inner ends cylindrical projections4 which have a telescoping engagement whereby the sections 2 and 3 maybe drawn apartor pushed together to a greater or less extent tocorrespond with the thickness of the wall with which the ventilator isto be engaged.

The section 2 of the ventilator is arranged in the outer portion of thewall and is closed on its outer end by a perforated plate 5 which willfreely admit the air to the ventilator but will prevent the entrance ofbirds, animals or foreign objects. The outer 'end of the section 2 andthe plate 5 will be preferably disposed in the same plane or flush withthe outer surface of the wall and will thus present no obstruction orprojection beyond the side of the building.

The section 3 of the ventilator is arranged in the inner portion of thewall and has its outer end flush with the inner surface of the wall. Inthe inner end of the section 3 is arrange a valve or damper comprisingan inner apertured plate 6 which is rigidly secured in the inner end ofthe section and a revolubly mounted notched plate 7 which is adapted tobe turned in one direction or the other to open and close the apartmentsin the fixed plate to a greater or less extent thereby regulating theamount of air passing through the ventilator. The outer plate 7 isprovided with an operating handle 8 which is here shown and preferablyconsists of a bar connected at its opposite ends to two of the notchedportions of the plate.

The sections 2 and 3 of the ventilator are adjustably connected togetherby a central longitudinally disposed connecting rod 9 the outer end ofwhich is rigidly secured to the center of the plate 5 of the sections 2of the funnel while the inner end of the rod 1 projects through alinedcentrally disposed apertures formed in the plates 6 and 7 The inner endof the rod is threaded and projects a considerable distance beyond theinner end of the sections 3 and on said threaded end of the rod isadapted to be screwed a clamping nut 10 which serves to adjustablysecure the sections together in the wall and also serves to hold therevolubly mounted valve or damper plate 7 in its adjusted position withrespect to the inner stationary plate 6 of the damper.

A ventilator constructed as herein shown and described may be formed inany suitable size according to the size of the room or building in whichthe same is to be used and may be readily arranged and secured in aframe, masonry or other form of wall. By constructing the outer sectionof the wall with a funnel shaped or flared outer end it will be obviousthat any water which may be driven into the outer end of the funnel willreadily run down inclined walls of the outer section and out through theperforated plate on the end thereof thus preventing the water fromentering the room or building.

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood without requiring a more extended explanation.

Having thus described my invention what I claim is:

A -ventilator comprising an inner and an outer-funnel shaped sectionwith cylindrical inner projecting ends mounted one on the other, theouter section having a perforated plate connected to the mouth thereof,the inner section having an apertured plate rigidly secured in the mouththereof, and provided with a notched plate rotatably mounted thereon, arod having one end rigidly secured to said perforated plate, its otherend being screw threaded and projecting be yond the apertured plate soas to permit of In testimony whereof I have hereunto set the twosections being adjustable to or from my hand in presence of tWosubscribing Wit- 10 each other by means of the cylindrical ends nesses.

of the sections slidin one on the other and i y a clamping nut on Eaidprojecting eiid of HENRY OBERMANN' O the rod to hold the two sectionsadjusted, the Witnesses:

parts constructed and arranged to be Wholly H. BIERMANN, seated Within aWall. E. G. STELLVVAGEN.

Copies of this patent may he obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. (3..

